Removing a 4'x4' section of hardwood flooring


I plan to remove a 4'x4' section of 1.75" x .75" inch hardwood flooring from a corner of a bedroom in order to make a bathroom larger. I was planning on just using my circular saw set at .75 inch depth and replacing the blade when I hit a nail.
I've never hit a nail with a circular saw before, and I'm not sure if this will ruin my $30 walmart saw. Is there a better tool to do this job with? I don't want to cut the subfloor or I'd just use a sawzall.
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If you have a good hardened tip blade it will saw a few nails before it is trashed. I won't like it, but it will do it. I can't see any permanent damage to the saw, just noise, maybe smoke from the blade, but usually it is over before you realize it. I would definitely use a guide, even just a 2 x 4 trim screwed down or someone standing on it. I'm not steady enough to make a long straight cut freehand.
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snipped-for-privacy@gmail.com wrote:

That is probably the best way to remove it. If you hit a nail, you will see sparks. Other than that, you won't really notice anything except that the blade will suddenly be very dull. It won't ruin the saw.
--
Robert Allison
Rimshot, Inc.
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You guys are Great! thanks. Also, a good tip about nailing down a temporary guide of a 2x4.
Thanks again gents.
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